Do you use the 5-second rule if your food hits the floor by mistake?

For those not familiar, the 5 second rule is when you will still pick up your food and eat it if it's been on the floor less than 5 seconds.

My brother has done this, but personally, I think it's disgusting. So how about you? Have you ever done this or still continue to use this rule today?
Do you use the 5-second rule if your food hits the floor by mistake?
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